Backflow preventer leaks-
I have a Watts backflow valve hooked up to our city water supply since we also have a well that delivers water into the house. (The two systems are not interconnected but the valve is required by law.)
The leak is from the underside of the valve. Apparently there is a nylon or plastic fitting that is inserted into the valve in the bottom. It leaks at least a drop per second.
It doesn't appear to be threaded. I think it's a pressure relief valve, but I don't know.
Is this something I can service or does the valve need to be removed and/or replaced?